Removal of Thin Clouds in Landsat-8 OLI Data with Independent Component Analysis
Removal of Thin Clouds in Landsat-8 OLI Data with Independent Component Analysis
复制标题
利用独立成分分析去除 Landsat-8 OLI 数据中的薄云
DOI：
10.3390/rs70911481
复制
发表时间：
2015-09-01
期刊：
影响因子：
5
通讯作者：
Qian, Jiang
中科院分区：
文献类型：
--
作者：
Shen, Yang;Wang, Yong;Qian, Jiang
An approach to remove clouds in Landsat-8 operational land imager (OLI) data was developed with independent component analysis (ICA). Within cloud-covered areas, histograms were derived to quantify changes of the reflectance values before and after the use of the algorithm. Referred to a cloud-free image, changes of histogram curves validated the algorithm. Scatterplots were generated and linear regression performed for the reflectance values of each band before and after the algorithm, and compared to those of the reference image. Band-by-band, results in cloud removal were acceptable. The algorithm had little effect on pixels in cloud-free areas after the analyses of histograms, scatterplots, and linear regression equations. Finally, the algorithm was applied to various land use and land cover types and cloud conditions, and to a full Landsat-8 scene yielding satisfactory results efficiently.
